- WH7850 50 mm carbon wheel earns the Dura-Ace pedigree and is designed to complement its 10-speed groupset meeting pro road race criteria - 50 mm deep full carbon rim for improved aerodynamics and increased rigidity for sprinters and TT specialists - 20 rear stainless steel butted and bladed straight pull spokes with a 2 cross lacing pattern improve lateral and torsional (power transmission) rigidity - Elbow-less spokes make for a Strong yet compliant wheel - High lateral rigidity is produced with a 3 mm offset asymmetric rim and wide flange spacing - Improved Freehub body design for quick pawl engagement (125% faster than previous Dura-Ace) for instant power transfer - Labyrinth double contact sealing - low-friction seals effectively shut out water, mud and dirt without affecting rotational smoothness - Borozon treated bearing races - super mirror finish bearing races Reduce friction and provide a more precise bearing action - Cold forged and machined aluminium hub shell and oversized 7075 alloy axle combined with a titanium freewheel body all keep the wheel weight to a minimum - 8,9 and 10-speed compatible rear wheel - 700C tubular compatible - Supplied with QR skewer